Wing nut wrench



FIG. 1 is a perspective view of a wing nut wrench showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevational view thereof, the left side view appear the same;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a front elevational view thereof, the rear view appearing the same. 

The ornamental design for a wing nut wrench, as shown. 